Separable fastener



F. S. CARR SEPARABLE FASTENER Filed Decf Ej Patented Jan. 8, 1924.-

UNITED STATES PATENT i ori-ical FRED B. CARR, OF NEWTON, MASSAQHUSETTS,ASSIGNOR T' CARR FASTENER CO1!- i PANY, OF CAMBRIDGE, MASSACHUSETTS, vACORPORATION OF MAINE.

sanitarie mammina.

in separable fasteners. It is among the objects of the invention toprovide an improved and simplified securing means for attaching thesocket of the fastener to its carrying fabric and to provideV afastener, preferably of the three-,side lock type, in' which arelatively short stud may be used if desired.

In the drawings, which show a preferred form of one embodiment of myinvention v,

Figure 1 is a front elevation of a fastener;

F ig. 2 is a section on the line .2-2 of Fig. 1

Fig. 3 is a section on the linel 3-3 of igs. 4 and 5A illustrate detailsof the preferred form of attaching plate; and

Fig. 6 is a rearelevation of the socket casing.

Referring to the drawings and to the preferred form of my inventionlselected for illustrative purposes, I have shown a stud havinga head 6and a neck 7 presenting between them a relatively abrupt shoulderS` andhaving a shank portion 9. The pre ferred form of socket illustratedincludes a socket member secured to that side of a curtain or otherflexible carrying medium 10 on which the stud is located and including4U forwardly projecting prongs 11 adapted'to penetrate the fabric 10 andto engageand be clenched within the attaching. plate which, asillustrated, is preferably formed from two pieces of metal, a coverplate 12 and a clench @s plate 13. The clench plate 13 may, if desired,be depressed or apertured centrally' and preferably provides holes 14 toreceive' the forwardly projecting prongs 11. The metal from the holes14, as best viewed in 5 Fig. 4, is preferably only cut away on threesides, the outer edges not 'being cut and the metal being thrown towardthe interior of the securing plate so as to rest against the cover plate12 and to provide reinforcing and clenching parts 14', which render un-7 of the stud. `The stud-receiving aperture necessary the pro-visionofthe usal separate reinforcing and clenching plate ordinarily used withthis type of securing means.

n Referring now to the socket proper, thisA may be conveniently formed,as illustrated,` from two pieces of metal, one constituting the casingproper 15 dished to receive a spring 16 and providing side walls 17 fromwhich the clench prongs 11 project. A front plate 18 may be securedvtothe casing propery 15 by any suit-able means, typified by therelatively shortprongs 19. The socket con-A tains a spring, which maybeof wire bventv to the form illustrated in Fig. 3 having'one end thereofadapted to intersect the top of lthe stud-receiving opening 20 and topress the stud when entered therein against a fixed jaw 21` which may beformed on the front plate 18 of the socket proper. This jaw 21preferably slopes upwardly and rear- 75 wardly so as to provide aninclined surface against which the -shoulder 8 of the stud `rests whenstud and socket are in engagement, with the Iiaw portion 25 of thespring 16k engaged in the opposite side of the neck 90' 20 is preferablyelongated to permlt relative tipping movement of stud and socket inonedirection only, this being the direction produced by an outward pullon, thatl side of the socket toward which the fixed jaw 211 isflocated,the socket fulcrumingv about the spring `jaw` 25 as the yshoulder'8rides up the incline of the fixed jaw21 until the stud and socket arefree to separate.v

While the stud vand socket may bel freely separated by an outward pullon'the bottom of the socket, as viewed in Fig. 2, a corre- -spondingtipping movement -which would normally arise from an inward push on the0 upper sideof the socket as viewed in Fig. 2

will not separate the studand socket because such anfinwar'd push, whenarising from any normal strain on the flexible carrying medium 10, suchfor instance as wind strain on the curtain of an automobile, will roducean upward pull on, the socketl which will urge the lfixed jaw 21 firmlyinto engagement with the neck 7 of the stud behind the shoulder 8 sothat the stud and socket will 105 not separate pursuant to such maniulation. Further, where as in the fastener il ustrated the shank k9 ofthe stud is exceedingly short, the upper portion of the casing 15 willbear against the base `of the stud beo Y fore any considerable tippingmovement can j a socket having forwardly pro take place arising from anlnward push on the top of the socket. On the other hand, an outward pullon the bottom of the socket in the desired stud and socket separatingydirection may produce a `tipping movement 'because the resolution offorces causingthe inclined face of the jaw 21 to ride down the shoulder8 permits the 'outward movement of the bottom of the socket to asuiiicient extent so that the desired tipping may be e'ected. A,

While I lhave shown and described al pre erred form of one embodiment ofmy iny vention, it will be understood that changes involving omission,substitution, lalteration and reversal of parts, and evenchangesin themode of operatiommay be made without departino from the scope of myinvention, which is lbest' defined in the ollowing claims.

Claims:

l.' A fastener comprising, in combination, 'ecting prongs and asocket-securing part inc uding a cover plate,l a clench plate within thecover plate, said clench plate having penetrations to permit passage ofysaid prongs therethrough, and

portions `of `said clench plate bent toward.

said ,cover plate adjacent said penetrations to providelprong-deileeting` surtaces interiorly Iof saidcover plate. f 2.Affastener comprising, .in combination, a socket having forwardlyprojecting prongs and a socket-securing part includinga cover plate, aclench plate within the cover-plate,

said clench plate having penetrations to permit passage of said rongstherethrough, and

said -cover plate adjacent said penetrations to provide prong-deflectingsurfaces i'nteriorly. of said cover plate, said portions of said clenchplate bent toward said cover plate and resting lthereagainst wherebysaid cover plate may reinorce said portions.

risingia socket proper having prongs projecting forwardlyv therefrom.and socket-sevfrom said penetrations in said clench plate remainingattached to said clench plate 'at one side and bent toward the insideface of said cover plate to provide means interceptfixed `jaw 21, 7. "Asocket 3. A socket for-separable fasteners com-VV ing said prongspursuant to their passage through said enetrations in -said clenchplate.

4'. VA separable fastener comprising, in combination, a-stud havingahead ,and a. neck* with a lrelativelyabrupt shoulder between them, and asocket secured to a tienible carrying medium at that side thereofadjacent said Astnd and presenting resilient jaw means above the stud.and an inclined Atired jaw below the stud, said inclined fixed jawpresenting a sloping surface permitting j disengagement of said fixedjaw from behind said shoulder when said socket is tipped relative tosaid stud in' that direction resultt ing from an outward pull on thatside of the socket Where said fixed jaw is located.

5. Av separable fastener comprising, in combination, -a stud having ahead and a, neck with a relatively abruptyshoulder between them, and asocket secured to a fleaible carrying medium at that side thereoi'adjacent said stud and. presenting resilient jaw lmeans above the studand an inclined j fixed janT below the stud, said inclined fined jawpresenting a sloping surface permitting .disengagement of said-.fixedjaw from behind said shoulder .when said socket istipped relative tosaid stud in that direction resulting from an outward pull on that sideof the socket where said 'ixed ljaw is located, said stud and. socket orfanizedand operating lto prevent separation y relative tipping move-yment in all. other directions.

6. A t separable fastener comprising, .in combinatioma stud having ahead, a `neck and a shoulder between them, and socket portions of said cench plate bent toward` means including-a casing 15 presenting a`stud-receiving aperture 20 and cooperating with a front plate 18presenting a fixed jaw 21, and spring means in said casing presenting aspringer-pressed .jaw 25 opposite said for separable fastenerscornprisln'g, in combination, a casing having orf wardlyv projectingprongs 1l and attaching g FRED s. cana Miti lmeans including a coverplate 12 and a clench

